Year            Count     Valid     Min        Max        Mean       Stdev      Median
2007            890       875       20.868601  22.235666  21.52801   0.316834   21.501568 
2008            890       875       20.161034  21.457399  20.749978  0.28484    20.7162   
2009            890       875       19.699667  20.756701  20.283843  0.253275   20.314766 
2010            890       875       20.686567  22.105133  21.328805  0.308828   21.3214   
2011            890       875       20.549168  21.996733  21.261202  0.304631   21.249334 
2012            890       875       20.113434  21.642267  20.920571  0.332346   20.926834 
2013            890       875       20.821167  22.042566  21.421127  0.268466   21.407066 
2014            890       875       19.283066  20.847666  20.059701  0.343468   20.0151   
2015            890       875       21.2915    22.663233  21.988644  0.332801   22.005466 
2016            890       875       21.879667  23.140301  22.512994  0.273254   22.507267 
2017            890       875       20.928667  22.382166  21.668592  0.325428   21.6444   
2018            890       875       19.7316    21.230499  20.610733  0.334887   20.646034 
2019            890       875       19.087366  20.6537    19.900698  0.354114   19.902401 
2020            890       875       21.1929    22.382267  21.840618  0.296831   21.881599 
2021            890       875       19.459433  21.219633  20.318391  0.407501   20.2971   
2022            890       875       20.871138  22.055103  21.534023  0.260996   21.555517 
2023            890       875       21.022699  22.546234  21.735166  0.362487   21.724167